Not only Japan but there are many places in all over the world where you can see some bigger investors of bitcoin. They are intelligent personalities and who know the reality of bitcoin and they think for their future and they invest only to give a good future to their coming life that is why they do not care that how is their government for bitcoin but only invest in it. It is right that Japan government is in the favor of bitcoin but it do not mean that all of the bigger investors are from there.